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BMW 8 Series Convertible vs Porsche Boxster comparison

Compare performance (625 HP vs 500 HP), boot space and price (99,400 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or Porsche Boxster?

BMW 8 Series Convertible vs Porsche Boxster: Key differences

BMW 8 Series Convertible

  • markedly cheaper
  • a bit more power
  • substantially more efficient
  • marginally quicker 0–100 km/h
  • significantly more trunk space
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Porsche Boxster

  • markedly lighter
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Here’s where it gets real: The technical differences in detail

8 Series Convertible

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

BMW 8 Series Convertible is markedly cheaper – starting at 99,400 £ , while the Porsche Boxster costs 136,000 £ . That’s a price difference of around 36,600 £.

Fuel consumption also shows a difference: the BMW 8 Series Convertible uses 6.9 L/100km and is substantially more efficient than the Porsche Boxster with 12.7 L/100km. The difference is about 5.8 L/100km.

Boxster

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the BMW 8 Series Convertible offers a bit more power – delivering 625 HP compared to 500 HP. That’s roughly 125 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Convertible is marginally quicker – completing the sprint in 3.3 s, while the Porsche Boxster takes 3.4 s. That’s about 0.1 s quicker.

Looking at top speed, the Porsche Boxster is moderately faster – reaching 308 km/h, while the BMW 8 Series Convertible tops out at 250 km/h. The difference is around 58 km/h.

There’s also a difference in torque: the BMW 8 Series Convertible delivers markedly more torque with 750 Nm compared to 450 Nm. That’s about 300 Nm more.

8 Series Convertible

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Seats: BMW 8 Series Convertible offers more seats – 4 vs 2.

In terms of curb weight, Porsche Boxster is markedly lighter – 1,485 kg compared to 1,915 kg. The difference is around 430 kg.

Looking at boot space, the BMW 8 Series Convertible offers significantly more boot space – 350 L compared to 122 L. That’s a difference of about 228 L.

When it comes to payload, the BMW 8 Series Convertible carries noticeably more – 425 kg compared to 270 kg. That’s a difference of about 155 kg.

Who wins the race in the data check?

The BMW 8 Series Convertible holds a decisive overall lead in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £99,400
8 Series Convertible

BMW 8 Series Convertible

  • Engine Type Diesel MHEV, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 333 - 625 HP
  • Consumption L/100km 6.9 - 11.2 L/100km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 8 Series Convertible

The BMW 8 Series Convertible is a head-turning grand tourer that drops its roof with the kind of theatrical flourish you expect from a modern Bavarian showboat. It wraps occupants in sumptuous materials and driver-focused polish, offering effortless long-distance comfort and just enough drama to make every arrival feel like an occasion.

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P90343983_highRes_the-new-bmw-m850i-xd
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Reviews BMW 8 Series Convertible

No reviews yet. Share your experience and help others decide.

Porsche Boxster

The Porsche Boxster epitomizes the essence of a pure, open-top driving experience with its mid-engine roadster design. Known for its agile handling and dynamic performance, the Boxster seamlessly blends luxury with thrilling precision on the road. Its unmistakable styling and superior engineering continue to captivate automotive enthusiasts who crave a visceral connection to the art of driving.

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Reviews Porsche Boxster

No reviews yet. Share your experience and help others decide.

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BMW 8 Series Convertible
Porsche Boxster

Costs and Consumption
Price
99,400 - 165,800 £
Price
136,000 £
Consumption L/100km
6.9 - 11.2 L/100km
Consumption L/100km
12.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
180 - 255 g/km
co2
288 g/km
Fuel tank capacity
66 - 68 L
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Convertible
Body Type
Roadster
Seats
4
Seats
2
Doors
2
Doors
2
Curb weight
1,915 - 2,125 kg
Curb weight
1,485 kg
Trunk capacity
350 L
Trunk capacity
122 L
Length
4,851 - 4,867 mm
Length
4,418 mm
Width
1,902 - 1,907 mm
Width
1,822 mm
Height
1,345 - 1,353 mm
Height
1,252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
340 - 425 kg
Payload
270 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
333 - 625 HP
Power HP
500 HP
Acceleration 0-100km/h
3.3 - 5.5 s
Acceleration 0-100km/h
3.4 s
Max Speed
250 km/h
Max Speed
308 km/h
Torque
500 - 750 Nm
Torque
450 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6
Power kW
245 - 460 kW
Power kW
368 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
3,996 cm3

General
Model Year
2024
Model Year
2023
CO2 Efficiency Class
G
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche
What drivetrain options does the BMW 8 Series Convertible have?

Available configurations include All-Wheel Drive or Rear-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.